function [n_floor_prime] = Function_Floor_to_Prime(n)
% floor_to_prime Find the largest prime number smaller than input n
%
% Inputs:      n             - Integer input. (Corresponds to length of the base DMRS seq = # of SCs = 12*N_PRBs)
% Outputs:     n_floor_prime - the largest prime number (integer) smaller than input n
prime_nums_to_2048 = [2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97,101,103,107,109,113,...
            127,131,137,139,149,151,157,163,167,173,179,181,191,193,197,199,211,223,227,229,233,239,241,...
            251,257,263,269,271,277,281,283,293,307,311,313,317,331,337,347,349,353,359,367,373,379,383,...
            389,397,401,409,419,421,431,433,439,443,449,457,461,463,467,479,487,491,499,503,509,521,523,...
            541,547,557,563,569,571,577,587,593,599,601,607,613,617,619,631,641,643,647,653,659,661,673,...
            677,683,691,701,709,719,727,733,739,743,751,757,761,769,773,787,797,809,811,821,823,827,829,...
            839,853,857,859,863,877,881,883,887,907,911,919,929,937,941,947,953,967,971,977,983,991,997,...
            1009,1013,1019,1021,1031,1033,1039,1049,1051,1061,1063,1069,1087,1091,1093,1097,1103,1109,...
            1117,1123,1129,1151,1153,1163,1171,1181,1187,1193,1201,1213,1217,1223,1229,1231,1237,1249,...
            1259,1277,1279,1283,1289,1291,1297,1301,1303,1307,1319,1321,1327,1361,1367,1373,1381,1399,...
            1409,1423,1427,1429,1433,1439,1447,1451,1453,1459,1471,1481,1483,1487,1489,1493,1499,1511,...
            1523,1531,1543,1549,1553,1559,1567,1571,1579,1583,1597,1601,1607,1609,1613,1619,1621,1627,...
            1637,1657,1663,1667,1669,1693,1697,1699,1709,1721,1723,1733,1741,1747,1753,1759,1777,1783,...
            1787,1789,1801,1811,1823,1831,1847,1861,1867,1871,1873,1877,1879,1889,1901,1907,1913,1931,...
            1933,1949,1951,1973,1979,1987,1993,1997,1999,2003,2011,2017,2027,2029,2039];            
            
	for k = length(prime_nums_to_2048):-1:1
        if(prime_nums_to_2048(k) < n)
            n_floor_prime = prime_nums_to_2048(k);
            break;
        end
	end
end